EstimatorXpress has hundreds of thoroughly tested in-built estimating calculators up to latest building regs. Designed with the computer novice in mind, you simply input dimensions or answer Yes/No questions into on-screen drawings and EstimatorXpress costs and itemises the work for you, calculating all materials, labour, plant, subcontract and sundry.
It won't make errors in overlooking VAT, wastage, critical costs and/or profit. It will even calculate the wear and tear of your shovel.